How To Do Long Multiplication Sums (tu x tu) - Step by Step Guide - Quick Column Method

Let your child take charge of their learning

Access print-friendly, downloadable Maths and English resources for easy learning.
Our aim is to help children succeed at school. Supporting children in Maths and English can be made easier if you have the right resources.

Choose from our many plans or try us for free with Teach Weekly.

View Our Plans

Long Multiplication sums (tu x tu) - Step by Step Explanation - Quick Method

Learning to multiply a 2 digit number by another 2 digit number can appear to be quite daunting. But once you understand the technique, you can easily mulitply 2 or 3 digit numbers, using the column method, easily and quickly. There are many ways you can multiply larger numbers together e.g grid method, expanded column method, column method etc. Watch this video showing How to do a long multiplication sum using the column method.

Some children will find one method easier to understand and use. Children can be shown the different methods of multipliying numbers, this may help when they are first learning the principles behind long multiplication sums. Once they are more confident, they can then move onto the quick, efficient way of long multiplication sums. This will help them in tests and exams, where the time taken to work out a sum matters. Schools may teach how to solve long multiplication sums in a variety of ways.

Long Multiplication Sums Explained Step by Step (Column Method)

Below is an example of how to work out a long multiplication sum using the quick, efficient column method.

Multiplication Sum: 43 x 12 =

  1. Write th numbers into columns. Remember to put the tens and units for each number underneath each other.
    4 3
    x 1 2

  2. First multiply 43 x 2
    4 3
    x 1 2 (2 x 3 = 6) then (2 x 4 = 8) Write the answers to these sums underneath, as you would in an addition sum.
    8 6
    There are no numbers to carry over, if there are numbers to carry over, this can be done in the same way you would with an addition sum.

  3. Next multiply 43 x 10
    Although we are going to multiply 43 x 10, we will first place a 0 underneath the 6. We do this because we know that whenever a number is multiplied by 10 the answer ends in a 0.
    We can then continue with the sum.
    4 3
    x 1 2
    8 6
    4 3 0 (1 x 3 = 3) then (1 x 4 = 4) Write the answers to these sums underneath, as you would in an addition sum.
    In this example, there are no numbers to carry over. If there are numbers to carry over, this can be done in the same way you would with an addition sum.

  4. Finally add 86 + 430.
    We start by adding the numbers in the units column first (6+0 = 6)
    Add the tens (8+3=11). Notice the number 11, is made up of 1 ten and 1 unit, therefore we need to carry the 1 ten over to the hundreds column and write it into our sum.
    Add the hundreds (1+4=5).
    4 3
    x 1 2
    1 8 6
    + 4 3 0
    5 1 6

The answer to 43 x 12 = 516​

For more step by step examples on how to work out long multiplication sums using the column method visit Teach My Kids Learning Channel.

Video showing How to do a long multiplication sum using the column method.

Don't take our word for it...

"Amazing site just renewed my subscription for the second year. This site is well structured and has helped to assure me that the work we do at home co-ordinates and strengthens the work done at school."

Reena Chohan

"Teach My Kids is a fantastic resource. We use the work sheets to reinforce the Maths and English that our children, James 9 and Katie 8, are learning at school. They are ideal for when we have a spare 10 – 15 minutes, and also give us as parents the opportunity to see how much our kids know!

As and when the work sheets are completed, I log in and tick them as completed, so it’s clear which topics have been covered. I try to do 2 - 4 of worksheets a week and feel that they are of great benefit to both our children.

I would definitely recommend ‘Teach My Kids’, it’s fantastic value for money and if you have any questions or queries these are answered promptly."

Emma Robinson

"I have found the ‘Teach my Kids’ website to be very helpful and informative. The worksheets met my children’s individual needs at a time when I was struggling with ways in which to support them. They were very easy to follow have made a real impact on their confidence in Maths and English.

The website is clear and well thought out and easy for anyone to follow. Any queries are responded to promptly. A great website for parents!"

B. Gidda

"Teach My Kids has all the ingredients of the National Curriculum and above all good lesson planning. Such an excellent tool for parents and children. The worksheets are attractive and easy to read and follow. Excellent lively illustrations. I am impressed by the rewards systems and learning path progress. The learning paths are well constructed and brilliant because all the children in the family can use it. Very useful advice to parents.

I would encouraged parents towards this user friendly and excellent web site."

M. Welton

"Teach my kids is a very valuable website! Great worksheets available that help me and my child on her sometimes confusing learning path. Fabulous helpful and friendly owners, would highly recommend!"

Emma Jones

"I have been with Teach My Kids for a few months and can see an improvement in my daughter. The rewards have helped her stay focused."